Advanced Placement (AP), 11.02.2020 00:17 jtroutt74
The distribution of random variable R has mean 10 and standard deviation 4. The distribution of random variable S has mean 7 and standard deviation 3. If R and S are independent, what are the mean and standard deviation of the distribution of R−S ?
A) Mean 3 and standard deviation 1
B) Mean 3 and standard deviation 5
C) Mean 3 and standard deviation 7
D) Mean 17 and standard deviation 1
E) Mean 17 and standard deviation 5
Answers: 2
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The distribution of random variable R has mean 10 and standard deviation 4. The distribution of rand...
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